Bone preparation device

Patent metadata

Field	Value
Publication number	US-12329660-B2
Application number	US-201917414606-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Dec 27, 2018
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

An assembly for preparing bone stock includes a shell (52) comprising a base (54) having a support surface (56), and a lid (58). The base and lid have a void space (60) therebetween. A carriage (62) is disposed at least partially within the void space, and moveable across the support surface. The carriage comprises a wall (64), at least a portion (65) of which is resiliently deformable. The wall cooperates with the base to define a preparation chamber (66), and a removal element (68) configured to remove soft tissue from the bone stock is disposed at least partially therein. The resilient portion of the wall is configured to deform when bone stock is positioned between the removal element and the wall. The carriage is configured to receive power from a drive train to actuate movement of the carriage across the support surface, and the removal element is also configured to receive power from the drive train.

First claim

What is claimed is:

1. An assembly for preparing bone stock, said assembly including:
a shell comprising a base having a support surface and an outer surface opposite said support surface, and a lid having a void space therebetween;
a carriage disposed at least partially within said void space and moveable across said base of said shell, said carriage comprising a wall, at least a portion of said wall being resiliently deformable, said wall cooperating with said base to define a preparation chamber; and
a removal element disposed at least partially in said preparation chamber, said removal element configured to prepare said bone stock by removing soft tissue from said bone stock; and
wherein said carriage is configured to receive power from a drive train to actuate movement of said carriage across said support surface, and said removal element is also configured to receive power from said drive train; and
wherein said portion of said wall that is resiliently deformable is configured to deform when bone stock is positioned between said removal element and said wall.

2. The assembly as set forth claim 1 , wherein said at least a portion of said wall comprises a plurality of articulating wall segments.

3. The assembly as set forth in claim 2 , wherein said plurality of articulating wall segments are hinged.

4. The assembly as set forth in claim 2 , wherein one or more of said plurality of articulating wall segments present a curved interior surface.

5. The assembly as set forth in claim 1 , wherein said at least a portion of said wall comprises an elastomer.

6. The assembly as set forth in claim 1 , wherein said carriage further comprises a carriage housing spaced outwardly of and coupled to said wall, wherein said carriage housing extends at least partially around an outer perimeter of said wall and is moveable across said support surface of said base.

7. The assembly as set forth in claim 6 , wherein said wall is coupled to said carriage housing with one or more anchors.

8. The assembly as set forth in claim 7 , wherein said one or more anchors comprise: an elastomer; and/or a spring.

9. The assembly as set forth in claim 7 , wherein said wall comprises at least six hinged wall segments, wherein at least two of said at least six wall segments are connected to said carriage housing with said one or more anchors.

10. The assembly as set forth in claim 1 , wherein said carriage is moveably mounted in said void space on said surface of said base.

11. The assembly as set forth in claim 1 , wherein said base includes one or more slots with a drive element movably disposed therein, said drive element being operatively attached to said drive train.

12. The assembly as set forth in claim 1 , wherein said base includes a first slot and a second slot parallel to said first slot and a drive element respectively disposed therein, wherein said drive element is operatively attached to both said carriage and said drive train and is configured to move from a first position to a second position within each of said first and second slots to move said carriage linearly across said support surface of said base.

13. The assembly as set forth in claim 1 , wherein said base includes one or more guides mounted on said support surface in said void space that cooperate with an exterior of said carriage to guide movement of said carriage across said support surface of said base.

14. The assembly as set forth in claim 1 , wherein said drive train is operably coupled to said carriage and configured to transfer rotary power from said drive train to cause linear movement of said carriage across said support surface of said base, and said drive train is operably coupled to said removal element and is configured to cause rotational movement of said removal element, wherein upon actuation of said drive train said carriage moves linearly across said support surface of said base and said removal element moves rotationally in said preparation chamber.

15. The assembly as set forth in claim 14 , wherein said drive train is configured to cause rotational movement of said removal element in a forward movement (e.g. clockwise) and a reverse movement (e.g. counter-clockwise), opposite said forward movement, and concurrently cause linear movement of said carriage linearly across said support surface of said base.

16. The assembly as set forth in claim 1 , wherein said drive train further comprises:
a cam follower having an upper surface, a lower surface having a track thereon with an oblong profile, and a drive slot, wherein said upper surface of said cam follower is adjacent said outer surface of said base such that said cam follower is opposite said carriage, and moveable across said outer surface of said base of said shell; and
a cam rotationally coupled to said drive train and disposed in said oblong track, said cam configured to cooperate with said oblong track and said drive slot to transfer rotary power from said drive train to cause linear movement of said cam follower across said outer surface of said base and cause corresponding linear movement of said carriage across said support surface of said base.

17. The assembly as set forth in claim 16 , wherein said cam has a spring-loaded tip that abuts an inner surface of said oblong track.

18. The assembly as set forth in claim 1 , wherein said removal element is rotatably mounted to said shell.

19. The assembly as set forth in claim 18 , wherein said removal element is selected from: a rotating brush; a rotating grater; and a rotating fluted screw.

20. The assembly as set forth in claim 1 , wherein said support surface is inclined so that gravity funnels said bone stock in said preparation chamber towards a chamber location that facilitates contact with said removal element.

21. A method of preparing bone stock with a preparation module including a shell having a base with a support surface and defining a void space, a carriage at least partially disposed in the void space and comprising a resilient wall including a resilient portion which cooperates with the base to define a preparation chamber, and a removal element disposed within the preparation chamber, the method comprising the steps of:
providing bone stock comprising soft tissue coupled to bone tissue;
inserting the bone stock into the preparation chamber of the carriage;
actuating the removal element; and
moving the carriage across the support surface such that bone stock disposed between the removal element and the resilient portion causes the resilient wall to deform outwardly away from the removal element.

22. An assembly for preparing bone stock, said assembly including:
a shell comprising a base having a support surface and an outer surface opposite said support surface, and a lid, said base and lid having a void space therebetween;
a carriage disposed at least partially within said void space, and moveable across said support surface of said base, said carriage comprising a wall, said wall comprising a plurality of articulating wall segments, said wall cooperating with said support surface of said base to define a preparation chamber; and
a removal element disposed at least partially in said preparation chamber, said removal element configured to prepare bone stock by removing soft tissue from said bone stock;
and wherein said carriage is configured to receive power from a drive train to actuate linear movement of said carriage across said support surface, and said removal element is also configu

Assignees

• Stryker Corp

Inventors

• Lambarth Clifford Edwin

Classifications

• A61F2310/00359

  Bone or bony tissue · CPC title

• A61B17/1635

  for grafts, harvesting or transplants · CPC title

• A61F2002/4648

  Means for culturing bone graft · CPC title

• A61B2017/1602

  Mills · CPC title

• A61B17/1642

  for producing a curved bore · CPC title